Home / 214,979.60-322,615.20-139,916.90

Finding the Fourth Proportional to 214,979.60, 322,615.20 and 139,916.90

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Solution

The fourth proportional to 214,979.60, 322,615.20 and 139,916.90 is: 209,970.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,979.60 : 322,615.20 = 139,916.90 : x
  2. Step 2: Convert to fraction form
    214,979.60/322,615.20 = 139,916.90/x
  3. Step 3: Cross multiply
    214,979.60x = 322,615.20 × 139,916.90
  4. Step 4: Simplify right side
    214,979.60x = 45,139,318,676.88
  5. Step 5: Solve for x
    x = 45,139,318,676.88/214,979.60
  6. Step 6: Final answer
    x = 209,970.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.